Cut off valve



July 14, `1931. J.-w. WOODRUFF 1,813,982

CUT-OFF VALVE Filed March 6, 1929 ATTORN EYS Patented July 14, 1931UNITED STATES PATENT OFFICE JOSEPH W. WOODRUFF, or ELIZABETH, NEW JERSEYGUT our vALvE Appncation mea March e, 1929. ,seriai No. 344,680.

'110v the outlet valve embodying the present invention is connected.

` vOne object of this'invention is to provide such a cut-olf oroutletvalve whereby lubricant or otherliqvuid or semi-liquid can be 1lconstantly *maintainedV at a uniform high 'pressure at the valve and atthe same time permit the valve to be easily and quickly -manuallyoperated. f

Another object is to' provide such a valve which is closed by thelubricant pressure and includes novel and improved means wherebythe'valve can' be easily manuallyy openedby the vsimple swinging ofahandle v'or lever. Other objects lare to lprovide* a iuvalve of thecharacter described including novel and-improved means for positivelyholding saidvalve open againstthe pressure ofthe lubricant or otherVliquid; to pro- V vide'such a valve including a ball checkl SQ whichcloses in the direction of movement of theliquid through the valve andunder pressure thereof, and manually operated means for unseating theball checkmto perm-intflow of the liquid'through the valve; to

(pact inconstruction and strong andy durable A in operation, and toobtain other advantages and results` as will be brought out lby thefollowing description.

valve embodying my invention showing the parts of the same in theposition to permit ow of liquid therethrough.

Figure 2 is a vertical longitudinalV sectional view throughthe valveshowinglthe provide such a valve which is small and comparts in theposition for cutting'oif the flow of liquid through the valve,

Figure 3 is a horizontal sectional view Vtaken on the line 3-3 of Figure1, and

Figure 4 is a transverse sectional View on the line 4 4 of Figure2.

Specifically describing the illustrated embodiment of my invention, thevalve consists of a main casing 1 which has a cylindrical bore 2extending inwardly from one end Vthereof and in which is slidable aplunger =3 having a main portion 4 to nicely fit the bore 2 and formedwith a longitudinal passage 5 to the outer end of which may be connectedas by screw thread 6 a tube or any other suitable part 7 through whichlubricant is to be supplied. The end of the plunger 3 to which the tube7 is connected projects outwardly beyond the end of the casing 1. At itsinner end the plunger 3 is provided with a reduced f portion 8 which isslidable throughv an opening 9 in a partition 10 intermediate the endsof thev casing l, 'said reduced portion also having a longitudinalpassage 11 for communication with the passage 5 in the portion 4 of theplunger.

At the side of the partition 10 opposite the portion 4 of the plungerisarranged a packing ring 12 which tightly surrounds the reduced portion11` of the plunger to form a`V liquid-tight joint therewith. Thispacking ring is held in positionby the end of a nipple 13 which isscrew-threaded into the end of the casingl 1 opposite the plunger 3.This nipple has a longitudinal passage 14 in axial alinement with thepassa e 11 through the reduced portion 8 of thep unger, and a valve seat15 is provided in the passage 14 to cooperate with a ball 16 which isnormally held in engagement with said seat by a spring17. This spring isheld in positionv by a tubular plug 18 screw-threaded. into the end ofthe nipple 13, and the plug 18 is formed at its outer end with .meanssuch as the screw threads 19 for connection with a tube 20 or` otherpart through which liquid is to be supplied.

The extremity of the reduced portion 8 of the plunger is formed with acupped seat 21 t@ engage Ythe ball 16, and trangsyerse bypass' fio fthereof at the bases of the recesses 23.

this position. g discs 24 with the side walls of the recesses alsoopenings 22 are formed in said reduced portion to permit passage ofliquid therethrough.

With this construction it will be observed that the casing 1 and plunger3 are relatively reciprocable and when the plunger is moved inwardly ofthe bore 2 of the casing the eK- tremity of the reduced portion 8engages the ball 16 so as to force the latter from itsseat as shown inFigure 3 of the drawings, while when the plunger' moves in the otherdirection said ball is released by the plungerand closed by the pressureof the liquid and the spring 17. The liquid from the inlet tube 20 flowsthrough the plug 18 past the valve seat 15 into the valve nipple 13 andthence through the by-pass openings 22 into the plunger 3, from whencethe liquid flows into the outlet tube 7. The packing ring-12 preventsleakage of the liquid around the reduced portion S of the plunger intothe bore 2.

For causing the relative reciprocation of the casing and the plunger 1may vprovide substantially rectangular recesses 23 Vin opposite sides ofthe casing 1 and arrange .in each thereof a circular disc 211 which iseccentrif cally connected to the plunger 3 by. a bolt 25 "whichpassesthrough slots 26 extending lonvgitudinally of the casing in adianietral plane The diameter oik the discs 24 is the same .as theLwidth of the recesses 23. The bolt 25 connecting the discs v24 to theplunger .3 xalso serves-to connect tothe discs the respective .arms of.a substantially .Ll-shaped Vhandle27 which-serves to rotatethe discs.:Preferably each disc has 'a ltransverse groove 30 in which is seatedthecorrespond-ing arinfof the handle to prov-ide a rigid connect-ionof thehandle to the disc.

It will be clearffrom the foregoing that oscillation of the handle 27will causev rotation of .the discs 24, which through theireccentricconnection to the plunger 3 and engagement -with the-side walls 28 ofthe recesses 23'ivill cause relative reciprocation ofthe casing l1 andthe plunger' 3. 1t should be further knoted that this operatinglmechanism for the valve, due tothe cam action of the discs 24 and walls28 of the. recesses23 when the handle 27 is rotated into the positionto'locate the aXis of the bolt 25 and the points of engagement of thecam discs 24 with the side Walls of the recesses infsubstantially anaxial plane of the casing 1, Will serve to positively hold the valve 16in open position against the pressure of the liquid, as shown iii-Figure1 or' the drawings. Thecasing-serves .as a stop to limit movement of thehandle beyond The engagement of the cani enables easy opening or' thevalve'against the high pressure of the liquid, and permits easy closingofy the valve byvsaid pressure when the dead centerrelation of the bolt25Y withthe points or engagement of the cam discs 24with --quicklyI'andl repeat-ed'lv'op'ened and closed.

It should also be noted that upon closing of theball valve 16 theplunger moves outwardly.y producing afpartial vacuum between the valveand the inner end of the plunger,

. and this :actionfcausesfthe 'liquid: orfigrease in the `outlet tube?Yto be :suckedfvbaok into the casing solas top'reventfwasteol;the'fgr'ease orlliquidaiidmafintaintherend fof the outlet tubefreeofzgreaseroruliquid. 85

. I am aware of such "structuresfas shownsby desire' to be understoodfasattempting :to:cl'aim such devices. However, wihile' I'have shown and-v`described. Ymy 'rin'v'ention as embodyii'ng'go certain details ofconstruct/lonnit Will-beaunde-rstoodthat?this-isiprirn'arily"orrthepurpose of. -filflustrating the.principles fof .thezfinveiition and that Amany nmodifications andchanges'mayY be made 'by th'osefslri'lledf inthef95 ari: without 'Ideparting 'from f 'the spirit z or scope `ofthe invention.

Having thus described imy I invention, what f1, A' valvedevicecomprising av casingx hav-c5100 ing-an `inletportcontrolledffbyean :outwardly v"closinggvalve;a plunger freciprocable.in. said z casing "and @havin-gaan foutlet :passage 'comy.municatiiig ifat Xits :inner/zend `with said! inlet port, said plunger engaging saidvalve toopeni the valve as 'Ether plunger] moves inwfarllyof Ythe'casing.andsaidvalverclosiiigiastheplung- Afer moves foutwardly,fa-.caimgpivotedi.uponvsaid `plunger.:and bearingupon :said casing, andY:means or'rotating-said'fcam, wherebyfinpon'flo 'rotation' ofi-saidcani relativeJreeprocatieirof said casing and: said Apliungerris iproduced (to Vopenandcloseisaiid valve. Y i f 2. fAyalve devieecomprising al casing having an -inletfport controlledfby an4outwardlyiifll closin g rvalve,d a l.plunger reciprocablein .said

casing .and having :kan .outlet passage IcommunicatingA at.itsinner-:en'd with .said .inlet port, said plunger engaging said valve.to open the valve as theplungei movesiiiwardly of the casingand saidvalve closing .as the plunger moves outwardly, sai'dicasing having arecess, a cam engaging Vopposite sijdeve'dges of said recess,meaiis'pivo'tally connecting said cam to saidplunger,anldvineaiisfiorrotating 125 cam relative recipreeation:f'fsaidcasing and said plunger isfprodncedto open va'ri'delese saidvalve. l

3. kAfvalve deviceicomprisn'g aea'snghav- 130 ing a longitudinal boretherethrough with an inlet port at one end, an outwardly closing valvecontrolling said port, a plunger reciprocable in said bore and having alongitudinal outlet passage communicating at its inner end with saidinlet port said casing having a pair of alined recesses in oppositesides thereof, a circular disc arranged in each of said recesses withits edgesengaging the side edges of the respective recess, meanspivotally connecting said discs coaxially and eccentrically upon saidplunger', and meanse for simultaneously rotating said discs, wherebyupon rotation of said discs relative recipro-'T cation of said casingand said plunger is produced to open and close said valve.

4. A valve device comprising a casing having a bore opening through oneend thereof and an inlet passage at the other end, a plungerreciprocable in said bore and having an outlet passage therethroughcommunicating at its inner end with said inlet passage, an outwardlyclosing valve controlling said inlet passage and arranged to be openedby engagement therewith of the inner end of the plunger uponreciprocation of the latter, said casing having recesses atdiametrically opposite sides thereof, a cam disc arranged in each ofsaid recesses with it-s edges engaging the sides of the recess, meanspivotally connecting said cam discs to said plunger, and a U-shapedhandle in straddling relation to said casing with each of its armsconnected to one of said discs for simultaneously rotating both saiddiscs.

5. A valve device comprising a casing having a bore opening through oneend thereof and an inlet passage at the other end, a plungerreciprocable in said bore and having an outlet passage therethroughcommunicating at its inner end with said inlet passage, an outwardlyclosing valve controlling said inlet passage and arranged to be openedby engagement therewith of the inner end of said plunger uponreciprocation of the latter, said casing having recesses atdiametrically opposite sides thereof a cam disc arranged in each of saidrecesses with its edges engaging the sides of the recess, meanspivotally connecting said cam discs to said plunger, and a U-shapedhandle in straddling relation to said casingwith each of its armsconnected to one of said discs for simultaneously rotating both saiddiscs the handle being so related to the pivotal connection of saiddiscs with said plunger so as to bring said pivotal connection and thepoints of engagement of said discs with the sides of respective recessesinto an axial plane of said plunger so as to lock said plunger in valveopening position.

6. The valve set forth in claim 5 wherein said casing serves as a stopfor said handle to prevent movement of said plunger in one directionbeyondv said valve opening position.

7. The valve set forth in claim l with the addition of a spring forclosing said valve' head.

8. The valve set forth in claim 4 wherein the inner end of said plungerhas transverse passages for establishing communicationVK between saidinlet passage and the outlet passage in said plunger.

9. A valve device comprising a casing having a bore opening through bothends thereof and a partition in said bore, a plunger reciprocable insaid bore and having an outlet passage therethrough, a packing ringyabutting said partition in said casing and surrounding said plunger, anipple screw threaded into one end of the bore against said packing ringto hold the latter in position,

said nipple having an inlet port receiving one end of said plunger andcommunicating Vwith said outlet passage in said plunger, an

outwardly closing ball valve for controlling said inlet port, a springfor forcing said ball valve into closed position, the inner end of saidplunger engaging said ball valve to open the valve as the plunger movesinwardly of said casing, a tubular inlet plug screwed into said inletport and engaging the inner end of said spring to hold the latteragainst said ball valve, said plug being formed to be connected to aliquid supply, and means for causing relative reciprocation of saidplunger and said casing in the direction to open said valve.

JOSEPH NV. WOODRUFF.

